Tiller Tractor HP vs implement rating

[intothefray2007]

Hey guys,

So I have a 50HP MF65, and I'm working on 1.10m (approx. 42in) wide beds. Now I didn't realize this but not many implements are made to be that narrow while also being rated to work on tractors with this kind of horsepower.

So, my question is, can someone explain to me what the effects of using lower rated implements (say, a 20HP PTO rated rototiller) on a 50HP tractor?

Is the implement going to break right out of the gate, is it going to wear prematurely?...

Thanks!

 

[Papa Lar]

I wouldn't be too concerned about it for PTO implements. The Rating mostly tells you how much HP is needed to operate it. But having more power shouldn't affect it as long as you have a slip clutch that will do it's job.

Now for instance a plow or other pull type digging implements could be an issue since you would be able to bury it deeper and possibly overpower the construction intent.

 

[intothefray2007]

I wouldn't be too concerned about it for PTO implements. The Rating mostly tells you how much HP is needed to operate it. But having more power shouldn't affect it as long as you have a slip clutch that will do it's job.

Now for instance a plow or other pull type digging implements could be an issue since you would be able to bury it deeper and possibly overpower the construction intent.

Makes sense to me. I'm not too worried about the tiller since I'll be running that at a relatively low speed and no more than approx. 8 in deep.

I do have a tandem disc hoe for cultivating/weeding that I feel may wear out or break while hooked to the MF65. It's old, but in good shape. How can I tell what the hoe is rated at without having any information as to make, model, etc.? Is there a way to calculate that, or is it strictly based on construction design and materials?

 

[Papa Lar]

I wouldn't be concerned about a disk either as long as you aren't piling a bunch of extra weight on top of it to make it dig deeper than what it was designed for. They will only go as deep as the weight and soil conditions allow so having extra power pulling them should not be an issue.

 

[intothefray2007]

Okay, great. Thanks for the help buddy!

 

[powerscol]

Do you have a cat I or II 3pt. If it is a Cat II you will need the bushings for the cat I pins on your implements, or you will damage the 3 PT bushings. Hope this helps

 

[orangeandgreen]

Some of the 42 to 48 tillers I have looked at were Cat 0. Might consider getting a 60 or 72 and removing outer tines to get the desired width.

 

[LD1]

I WOULD be concerned with it.

The HP ratings of PTO implements are NOT what is required to run it. The HP is based on the gearbox size of the implement as well as driveline size. IF you get into anything that works the tiller hard, your tractor has the power to keep running it and possibly destroying it. Never know when you may hit a large rock, or get tangled in some roots. And rather than stall the tractor you may destroy the tiller.

Now the tiller should have some type of protection, slip clutch or shear bolt that will help.

But IMO you need something rated for the tractor.

Befco T50, 50" tiller is rated for 50HP and has cat 4 driveline. Thats getting closer.

 

[intothefray2007]

Do you have a cat I or II 3pt. If it is a Cat II you will need the bushings for the cat I pins on your implements, or you will damage the 3 PT bushings. Hope this helps

The tractor (MF65) has Cat I and so does the tiller, so no worries there.

 

[intothefray2007]

I WOULD be concerned with it.

The HP ratings of PTO implements are NOT what is required to run it. The HP is based on the gearbox size of the implement as well as driveline size. IF you get into anything that works the tiller hard, your tractor has the power to keep running it and possibly destroying it. Never know when you may hit a large rock, or get tangled in some roots. And rather than stall the tractor you may destroy the tiller.

Now the tiller should have some type of protection, slip clutch or shear bolt that will help.

But IMO you need something rated for the tractor.

Befco T50, 50" tiller is rated for 50HP and has cat 4 driveline. Thats getting closer.

Good point. However, I need a 42in width max based on how the beds are setup, and they just don't make those at that kind of HP. I think I'm willing to risk it based on the fact that I'm virtually stone/root/obstacle free. But I will definitely see if the tiller has a shear bolt or slip clutch as the specs don't explicitly mention either of those.

Short of getting a lower HP tractor, which I can't afford to do this year...